OHIO VALLEY
Specialty Company
Ferrules & Connectors
Quality
Excellent quality. We challenge you to compare any of our ferrules against your current supplier.
Excellent quality. We challenge you to compare any of our ferrules against your current supplier.
Conditioned
All ferrules are thermally conditioned and ready for immediate high temperature GC use.
All ferrules are thermally conditioned and ready for immediate high temperature GC use.
Advantages of Graphite Ferrules
Our graphite ferrules fit Swagelok® or Parker® fittings. Graphite ferrules are soft and compliant. They will not stick to glass at higher temperatures. These ferrules are ideal for glass to metal connections. The graphite ferrule can be reused if not over tightened.
Our graphite ferrules fit Swagelok® or Parker® fittings. Graphite ferrules are soft and compliant. They will not stick to glass at higher temperatures. These ferrules are ideal for glass to metal connections. The graphite ferrule can be reused if not over tightened.
Advantages of Polyimide Ferrules
Improved mixing techniques for polyimide ferrules allow for better homogenous mixing of graphite and polyimide resin. One can observe this when looking at a polyimide ferrule. The surfaces are very smooth and exhibit a highly polished or highly shined surface. Polyimide ferrules exhibit a lower coefficient of expansion than other polyimide resins, therefore,
reducing the tendency of the column nuts loosening in the heated GC ovens.
Improved mixing techniques for polyimide ferrules allow for better homogenous mixing of graphite and polyimide resin. One can observe this when looking at a polyimide ferrule. The surfaces are very smooth and exhibit a highly polished or highly shined surface. Polyimide ferrules exhibit a lower coefficient of expansion than other polyimide resins, therefore,
reducing the tendency of the column nuts loosening in the heated GC ovens.
Advantages of PTFE Ferrules
The PTFE ferrules are a one piece design and require no back ferrule. These ferrules are completely inert.
The PTFE ferrules are a one piece design and require no back ferrule. These ferrules are completely inert.
Choosing the Right Ferrule
| Ferrule Type | Recommended Use |
| 1/16” x 0.4mm | Capillary tubing with ID of 0.10 - 0.25mm |
| 1/16” x 0.5mm | Capillary tubing with ID of 0.28 - 0.35mm |
| 1/16” x 0.8mm | Capillary tubing with ID of 0.45 - 0.53mm |
| 1/16” x 1.0mm | Capillary tubing with ID of 0.75mm |
| No Hole | To create custom fittings or for plugs |
| 2-Hole Connects | 2 pieces of capillary |
Maximum Operating Temperatures
| 100% Graphite ferrules | Max Temp 450°C |
| 85% Polyimide/15% Graphite | Max Temp 400°C |
| 60% Polyimide/40% Graphite | Max Temp 400°C |
| 100% Polyimide ferrules | Max Temp 350°C |
| 100% PTFE ferrules | Max Temp 250°C |
Fused Silica Connectors
Fits 0.18mm to 0.53mm ID tubing.One size fits all, tapered interior bore assures a press-tight friction fit.
Easy to use - installs quickly.
Each connector tested for correct tapered angle.
Excellent for transfer line connections.
| Description Per Pack Catalog Number | Qty | Catalog Number |
| Universal Union | 5 | ML-100 |
| Universal Union | 25 | ML-100-25 |
| Universal Union (deactivated) | 5 | ML100DE |
| Universal Union (deactivated) | 25 | ML-100D-25 |
| Universal Union (deactivated) | 100 | ML-100D-100 |